You are a very lucky sissy with a Mistress who treats you so nicely. I would love to be in your position. I only wear panties, mostly thongs and G-strings and often pantyhose, stockings. I wear bras, lingerie and skirts to go out as often as I can. I have no male underwear and my wife likes it that way. She enjoys seeing the lines left on my ass by my panties, and using her strap on. I am rarely allowed inside her and never without protection.